Steel underframe for railway-cars.



G. B. ROBBINS & W. E. SHARP. STEEL UNDVERFRAME FOR RAILWAY CARS.

APPLICATION FILED MAY 29, 1908.

Patented May 25, 1909.

UN TED srnrnsrnrnn'r ()FFICE.

lilflQRGlfi l3. ROBBINS, Ob I'HNSDALE, A ND WILLIAM E. SHA RP. OFCHICAGO, ILLINOIS.

STEEL UNDERFRAME FOR RAILWAY-CARS.

Specification of Letters Patent.

Patented May 25, 1909.

Application filed May 29, 1908. Serial No. 435,809;

- To all whom it'mag concern:

Be it known that we, GEORGE B. ROBBINS and VVILLIAM E. SHARP, bothcitizens of the United States, residing, respectively, at Hinsdale andChicago, in the county of Cook and State of Illinois,.have inventedcertain new' and useful Improvements in Steel Underframes forRailway-Cars, of which the followmg is a specification.

V This invention relates to improvements in steel underframes forrailway cars, and has fori-ts main object to provide an improvedconstruction in which the steel center sills and draft arms on oppositesides of the body bolster are securely joined to the latter, so as toform a continuous anchorage for the draft gear and running from end tdend of the car.

of the draft beams and center sills extending structure.

through the body bolster, and have illustrated and described therein aspecific construction in which the connection is secured by a pair oflinks lying o either side of the draft arms and center si s and anchoredto the latter through the medium of keys extending transversely throughthe draft arms and-center sills and the opposite ends of the links, thisconstruction transmitting both pulling and buffing strains between thedraft arms and center sills.

Our present invention embodies a spe ci'fically different constructionfor effecting the same general result, as related to the transmission oftension or pulling strains.

The invention will be readily understood when considered inconnectioi'rwith the accompanying drawing, in which,.

Figure 1 is a top plan view of the complete Fig. 2 is a side elevationof the same. Fig. 3 is an end view of. the same.

Referring to the drawing, '5 indicatesa body-bolster which is hereinshown as continuous front side to side of the car.

6 designates each of a pair of center sills herein shown as of outwardlyfacing channel form, the ends of which abut against the side of the body-bolster either directly, as shown, or through the intervention of oneor more filler castings, as shown in our pending ap plication onunder-frame for railway car's, SerialNo. 400,458, filed January 6,1908',

l 7 designates each of a pair of steel draftrespectively.

directly-or indirectly abut against the side of the bolster 5.

securely. riveted to the outer sides of the draft arms and center sills,respectively, the transverse outer end walls of said brackets beingapertured to receive a pair bf tie-rods 10 that extend through thebolster 5 on either side of the draft-arms and center-sills, The said.tie rods 10 are threaded at their ends to receive nuts 11 and 12, bywhich said ,tie-rods, through the brackets 8 and 9 secured to thecenter-sills and draft-arms, constitute a strong tensile bond betweenthe draft-arms and center-sills whereby to transmit pulling strains ineither direction between the draft-arms and center sills. To increasethe rigidity and. strength of the structure, we also, as herein shown,preferably employ hollow filler castings 13 and 14, the former of whichis interposed be tween the two center sills 6, and the latter betweenthe two draft-arms 7, said filler castingsat their inner or closed endsabutting against the sides of the bolster. These filler castings arestrongly riveted to the center sills and draft-arms, respectively, asindiarms, also shown as of outwardly facing channel form, the inner endsof which either a 8 and 9 designate bracket castings that are Y cated at15 and.16.. Overlying the bodybolster and inner ends of the draft-armsand center sills are top and bottom gusset-plates 17 and 18,respectively, these gusset-plates being riveted to thebolster, asindicated at 19, and to the upper and lower sides of the fillercastings, as indicated at 20.

It will be seen that by reason of the foregoing construction the draftstrains imparted to the draft-arms are transmitted directly to thelongitudinal center sills through the brackets 9, tie-rods 10, andbrackets 8, thus producingv a practically. continuous 3.1101101.

agefor the draft-gear from end to end of the car, while .at the sametime permitting the employment of a continuous body bolster, if

desired, and avoiding shearin strains on the rivets by which the top andbottom plates-15 and 16 are secured to the and to the draft-arms andcenter-sills! Obviousl ,instead of employing tie-rodsthreadiussetaolster'i ed at 0th ends with securing nuts, ordinary headedbolts may be used, or any other form of tie-members capableaof securelybonding the brackets 8 an 9 through the bolster so as to transmitpulling strains in either direction.

We claim: V 1. In an underframe construction, the combination with abody-bolster, and draft arms and center-sills abutting againstpoconnecting said brackets throughthe bolster, substantially asdescribed.

2. .In an underframe construction, the combination with a continuousbody-bolster, and draft arms and center sills abutting against oppositesides of said body-bolster, of brackets secured to the adjacent ends ofsaid draft-arms and center sills, and tension members connecting saidbrackets through the bolster, substantially as described.

3. In an underframe construction, the combination with a body bolster,and draftarms and center sills abuttingoagainst o posit'e sides of saidbody-bolster, of brac ets securedvto the outer sides of the adjacentends of said draft-arms and centersills, a d tie-rods connecting saidbrackets through the bolster, substantially as described.

4. In an underfraine construction, the

combination with a body-bolster, and draftarmsand center-sills abuttingagainst oppo= site sides of said bodybolster, of filler castings betweenand riveted to said draft-arms and center-sills, res ectively, bracketssecured to the outer sides of the ad'acent ends of said draft-arms andcenter-Si s, and tierods connecting said brackets through the bolster,substantially as described.

5. In an. underframe construction, the combination with a body-bolster,and draftarms and center-sills abutting against oppo- Site sides of saidbodybolster, of filler castings between and riveted to said draft-armsand center-sills, res ectively, brackets secured to the outer si es ofthe adjacent ends of said draft-arms and center-sills, tie-rodsconnecting said brackets through the bolster, and upper and lowergusset-plates overlying and i'iveted to said bolster and fillercastings, substantiall as described.

-GEO GE B. ROBBINS. WILLIAM E. SHARP. Witnesses:

FRANCIS J. MoAssEY, WILLIAM B. CARPENTER.

